Hard Parts

2025 450 MX Baseline Suspension Settings

For 2025, we’ve had some updates on a few of the 450 MX’ers, Yamaha, KTM, Husqvarna, Gas Gas and Honda all have had some form of updates to their chassis and suspension specs. This means for 2025, baseline clicker settings have changed a little from the previous year. We make sure to spend some time…

ByKris KeeferJanuary 8, 20250Comments

Bolt-Ons Hard Parts Kawasaki

Moto Hose Works Y Silicone Radiator Hose Kit

Written/Tested By: Eddie Laret In 2024 Kawasaki released their new model KX450 with an all-new frame design. This meant the engine had a few different parts to them as the radiator hose kit was a major change for the 2024/2025 models. They relocated the water temperature sensor and jacket in the middle of the upper radiator…

ByKris KeeferJanuary 7, 20250Comments

Bike Brands Bolt-Ons Hard Parts Yamaha

Yamaha YZ450F Flywheel Weight

If you’re a Yamaha YZ450F owner you know that your bike can be a handful at times. If it’s not a handful then you can disregard this test altogether. For me the YZ450F is one of the best bikes in the 450 class for 2025 but it still needs some work to be an easy…

ByKris KeeferJanuary 4, 20250Comments

Bike Brands Hard Parts Performance Yamaha

Tested: Yamaha YZ250F With Dual Injector

ByKris KeeferJanuary 2, 20250Comments

Bike Brands Bolt-Ons Exhaust Hard Parts Kawasaki

Pro Circuit Ti-6 Muffler System (2025 KX250)

Kawasaki has an all new KX250 and Pro Circuit just recently came out with their latest Ti-6 version for the new green machine. With airbox changes to the 2025 version as well as a different cylinder head, this forced Pro Circuit to come up with a new headpipe and muffler. We have put time on…

ByKris KeeferDecember 16, 20240Comments

Bike Brands Exhaust Hard Parts Motocross

FMF 4.1 Ti Muffler System For Triumph TF250-X

The Triumph TF250-X is the newest 250 motocross machine so that means we haven’t had a lot of time with aftermarket mufflers yet until now. In stock form the TF250-X has a smooth low end power with a wide mid to top end but maybe lacks a little bit of excitement on low end (with…

ByKris KeeferDecember 9, 20240Comments

Bolt-Ons Hard Parts Yamaha

YZ 250/450F Brembo Brake Mod (Re-Visit)

So are you tired of that spongey feeling stock Yamaha brake? Since I get to ride all the bikes, I would have to say that the Brembo system is one of the best feeling brakes out of all the MX machines. However, a little mix and matching can get you a more linear feel than…

ByKris KeeferNovember 11, 20240Comments

Bike Brands Hard Parts Performance Yamaha

Optional 2025 Yamaha YZ250F ECU Map

If you're looking for a little more low end and increased mid range recovery, this "RESPONSE" map will help in those areas.

ByKris KeeferNovember 7, 20240Comments

Hard Parts Tires

Dunlop Factory Spec Tire Review

ByKris KeeferNovember 6, 20240Comments

Hard Parts Suspension Yamaha

2023-2025 Yamaha YZ450F Optimal Swingarm Measurements

I am not going to sit here and tell you that you need to be as meticulous as we are at times here at Keefer Inc. Testing but if you like to tinker and make adjustments here are some key swingarm pivot to center of rear axle lengths. I have tried a lot of different…

ByKris KeeferOctober 29, 20240Comments

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